Next time he tries to proposition you, give him a “Are you serious?” look and in an annoyed tone say something like,” Come on man, I have a hubby and its pretty serious. I’m offended that you think I’m a person that would cheat on someone I love.”

Then walk away in a huff. Your obviously not that offended but you should act like you are. He’ll probably later apologize and you can go on and forgive him but he definitely won’t try anything with you again. You have to be upfront with guys, but try to be upfront in a joking manner that eases the awkwardness that might result from a serious topic of conversation.

And to top it off, set him up with one of your girlfriends. He will definitely get the message then.